72 lines
1.8 KiB
Go
Executable File
72 lines
1.8 KiB
Go
Executable File
package ginserver
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import (
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"john/internal/utils"
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"math/rand"
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"time"
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"github.com/gin-gonic/gin"
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)
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const (
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letterBytes = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
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letterIdxBits = 6 // 6 bits to represent a letter index
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letterIdxMask = 1<<letterIdxBits - 1 // All 1-bits, as many as letterIdxBits
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letterIdxMax = 63 / letterIdxBits // # of letter indices fitting in 63 bits
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)
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var src = rand.NewSource(time.Now().UnixNano())
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func randStringBytesMaskImprSrc(n int) string {
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b := make([]byte, n)
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// A src.Int63() generates 63 random bits, enough for letterIdxMax characters!
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for i, cache, remain := n-1, src.Int63(), letterIdxMax; i >= 0; {
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if remain == 0 {
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cache, remain = src.Int63(), letterIdxMax
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}
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if idx := int(cache & letterIdxMask); idx < len(letterBytes) {
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b[i] = letterBytes[idx]
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i--
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}
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cache >>= letterIdxBits
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remain--
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}
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return string(b)
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}
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func GetLoggerMiddleware() gin.HandlerFunc {
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return func(c *gin.Context) {
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correlationID := c.Request.Header.Get(utils.HeaderNameCorrelationID)
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if correlationID == "" {
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correlationID = randStringBytesMaskImprSrc(30)
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c.Writer.Header().Set(utils.HeaderNameCorrelationID, correlationID)
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}
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logger := utils.GetLogger()
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logEntry := logger.WithField(utils.HeaderNameCorrelationID, correlationID)
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c.Set(utils.ContextKeyLogger, logEntry)
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}
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}
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func GetHTTPLoggerMiddleware() gin.HandlerFunc {
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return func(c *gin.Context) {
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start := time.Now()
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utils.GetLoggerFromCtx(c).
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WithField("method", c.Request.Method).
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WithField("url", c.Request.RequestURI).
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WithField("from", c.ClientIP()).
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Info("start handling HTTP request")
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c.Next()
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d := time.Since(start)
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utils.GetLoggerFromCtx(c).
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WithField("status", c.Writer.Status()).
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WithField("duration", d.String()).
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Info("end handling HTTP request")
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}
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}
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